<!DOCTYPE HTML>
<title>SVGAnimatedAngle interface - utilizing the orientAngle property of SVGMarkerElement</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
test(function() {
  // This test checks the SVGAnimatedAngle API - utilizing the orientAngle property of SVGMarkerElement.

  var markerElement = document.createElementNS("http://www.w3.org/2000/svg", "marker");

  // Check initial orientAngle value.
  assert_true(markerElement.orientAngle instanceof SVGAnimatedAngle);
  assert_true(markerElement.orientAngle.baseVal instanceof SVGAngle);
  assert_equals(markerElement.orientAngle.baseVal.value, 0);

  // Check that angles are dynamic, caching value in a local variable and modifying it, should take effect.
  var numRef = markerElement.orientAngle.baseVal;
  numRef.value = 100;
  assert_equals(numRef.value, 100);
  assert_equals(markerElement.orientAngle.baseVal.value, 100);

  // Check that assigning to baseVal has no effect, as no setter is defined.
  markerElement.orientAngle.baseVal = -1;
  assert_equals(markerElement.orientAngle.baseVal.value, 100);
  markerElement.orientAngle.baseVal = 'aString';
  assert_equals(markerElement.orientAngle.baseVal.value, 100);
  markerElement.orientAngle.baseVal = markerElement;
  assert_equals(markerElement.orientAngle.baseVal.value, 100);

  // Check that the orientAngle baseVal type has not been changed.
  assert_true(markerElement.orientAngle.baseVal instanceof SVGAngle);
});
</script>